Driving-wheel hub for motor-cycles.



F. S. ELLETT DRIVING WHEEL HUB FOR MOTOR CYCLES.

APPLICATION FILED JANUQ. ma.

` Patented July 4,1916. n 2 SHEETS-SHEET l. 46 mvmk/( Z9 L54 FXS. ELLETT. DRIVING WHEEL HUB FOR MOTOR CYCLES.

2 SHEETS-SHEET 2.

Eatented July 4,1916.

FREDERICK S. ELLETT, ELMIRA, .NEW YORK.-

DRIVING-WHEL HUB FOR MOTOR-CYCLES.

i Specification of Letters Patent.

application sied January 9,1913. serial No. 3741.089. Y j

To all 'whom it may concern Be it known that I, FnenemcirS. ELLn'r'r, a citizen of the United States, and resident of Elmira, Chemung county, State of'New York, have -inventedcertain new and useful improvements in Driving-Wheel Hubs forl Motor-Cycles, of which the following is a specification.

|llhis' invention relates to motor cycles and more particularly to-the construction of the driving wheel hub thereof.

Theobjects of the invention are to provide a driving wheel hub adapted to be equipped with a back pedaling brake at one end and at the other end with a free wheel, which may be locked to the hub barrel by a friction clutch, or an emergency brake whichis. operable independent of the back pedaling brake.

in lmotor cycle `construction there are conditions which restrict the length of .the hub and it has been impracticable in the constructions heretofore employed to combine two brakes or one brake and a free wheei, arranged exteriorly of the hub bearings, where they are readily accessible and may be adjusted or repaired Without disturbing the hub bearings.

According to my ivention, it is practicable to equip the hub with two brakes, orone brake and a free wheel, by transmitting all of the forces which resist turning ot' certain parts of the brakes, to the frame at one end of the hub. the non-rotatable parts at the opposite end of the hub being held by means of one or more sleeves arranged on the interior of the hub barrel.

The novel features of' the invention will be apparent from the following description, taken in connection with the accompany ing drawings, in which,

igure 1 is a longitudinalsection through a hub embodying the invention; Fig. 2 1s an end view of the same with certain parts broken away; and Fig. 3 is a View similar to Fig. 1 and showing another form of the invention. v

Referring 'te Figs. 1 and 2 of the drawings, i0 indicates anaxleI member having the threaded ends '11 and 12. A tubular n'iembeiV 13 engages the threaded end 11 and a bearing member 14 engages the end ml tubular. member 15 is arranged on the axle 10 and a driving member 16 which has secured thereto a sprocket.

17 is rctatabiy supported on -the bearing member. 14.. T he members 13 and 15 are provided with interlocking teeth or projections 18 on their adjacent ends, and theA outer end .19 of the member 13 is made anguiar in form and has fitted thereon an arm 20 which is secured to the frame of the motor cycle and holds the members 13 andv I15 against. rotation. The outer side of the member 15 is provided witharecess 21 intovwhich extends the exteriorly threaded yextension 22 of the driving member 16. The outer side of the drivj ing member16-is recessed to form a space for the ballsv 23 which are arranged between the driving member and the bearing member -lijand form la thrust bearing adapted to take up the outward thrust on the driving member. A bearing ring 24 engages the inner end of the extension 22 and between this ring and the member 15 is a cage 24 having arranged therein the balls 24,- which transmit thrust fromv the driving member to the member 15.

A hub barrel 25 is rotatably mounted on Patented uly 4, 1916.

the ball bearings- 26 and 27 arranged on the members 13 and 15 respectively. The barrel 25 is provided with the flanges 28 to which the spokes of the wheel may be attached, and has secured to one end thereotl a cup-shaped member or casing 29 to which is secured a driving sprocket'30 for the wheel, whereby the -latter may be driven by the motor. An end plate 31 is secured to the outer edge of the member 29 by screws 32, this plate being provided with' a central opening 33 for a purpose to be described hereinafter. Ar` ranged lon the interior oi the iiange 34 of" the member 29 are recesses which receive the outward projections 36 on the friction disks 37, wherebyV the latter are secured to the member 29 and rotate therewith.

The tubular member 13 is provided with the longitudinal grooves 38 inthe outer surface thcreotl and-suj'ipoi'ts a-ring or disk 39 which is prot'ided withprojections 40 arranged in the recesses 38, whereby said disk is held against rotation by said member. The disk 39 is providedwith an inwardly extending peripheral flange 41 and a radial fiange 42 and grooves 43 extending through .these flanges and having arranged therein the inward projections 44 on the friction disks 15. A plate 46 isjarried by the disk 39 and is provided with a circumferential recess. adjacent its inner'edge adapted to receive'the Harige 112. The platei is also projections di' which engage the grooves 43 and hold the plate against rotation. An externally threaded collar 48 is secured on the outer end et the member and: has arranged thereon an internally'threaded ring' or nut 49 provided with an operating arm 50 to which may be attached operating means such as the rod 51. The ring 49 is arranged in the central opening 33 in the plate 3l and a ball thrust bearing 52 is provided between `the ring and the disk 39.

The parts just described constitute ,an emergency brake which is actuated by rook: the arm 5G. The threads connecting the collar lldand ring i9 are of steep pitch and when the ring i9 is rocked by means of the arm 50, the disk 39 will be moved in an axial direction. T he friction disks 37 and l5 being arranged between the member 29 and the plate CG will be clamped together and retard the wheel, when the ring 49 is rocked in a direction to movethe disk 39 inwardly. 'When the ring i9 is rocked in the opposite direction, the disks 3T and l5 will become disengaged and permit the wheel to run free.

A member or casing 52 is secured on the opposite end of the barrel 25 in any suitable manner, as by means ot they nut 53 and car ries an end plate 5l which is secured thereto by the screw threads 55 or in any other suitable manner. The axially extending ange 56 of the member is provided with internal recesses or keyways 5T which receive the outward projections on the `friction disks 5S and thus cause these disks to rotate with the wheel.

The member l5 is provided with a series of external longitudinally extending grooves Ior keyways 59 which receive the inward pro-v gjectioieff $0 on the ring Gl, this ring being semer. it similar in :construction to the ring or disk 39 and beingr providled with the axially extending flange 62 and the radiallyT extending flange (33. The ring 6l is also provided with grooves or keyways (Se which receive the inward projections on the friction disks 65 and the ring or plate- 66, the latter engaging the flange 63 and being held thereby against axial movement in an out-. Ward direction, on the ring 61. An internally threaded sleeve 67 engages the threaded extension on. the drivin member 16 and is provided with a radial angei having a circumferential extension 69 which engages the outer side of the ring 6l. A.' spring 70 having one end thereof secured to the sleeve 67 is arranged\between the latter and the inner wall of themeinber 15 and bears against the latter, thus forming a fric tional retarding means for the sleeve il?. The periphery ot the flange 68 is conical in form and adapted to Aengage the conical inner surface of the plate 54C to .form a fricincassa direction the sleeve 6? will be niovedix'ltowy engagement with the plate 54 and `forma a' 7g driving connection between the member 16th y and the hub barrel whereby the motor cycle may be operated by \means of the pedals. Then the member ld is rotatedV in the oppositedirection by back pedaling, the sleeve 67 iseaused 'to more inwardly and carries with it the ring' 61, thereby compress# ing the friction. disks between the member' 52 and the disk (36. Since the disks '65 are held stationary, the hub barrel will be retarded by the frictional engagement of these' disks with the disks 57.

l? rom the above, it will be seen that l have provided a hub construction embodying d coaster brake. and' an emergency brake which are independentlyy operable and which are also arranged on the exteriorof the hub barrel and are readily accessible without disturbing the bearings of the hub barrel. It will also be observed that by the arrangement of the interlocking tubular members 115 and 15, all of the braking strain is carried to one side of the. hub and transmitted to the frame through the arm 20. ln Fig. 3, IA ha ve illustrated another form of the invention in which the hub is provided at one end with a back pedaling brake similar vto that shown in Fig. l, and on tlie other end of the vhub there is rotatably arranged ay free Wheel adapted to be connected with the hub, to drive the latter, by means of a friction clutch. The parts at the right end of Fig. 3

are substantially the same as those shown at the .right .hand end of Fig. l, but at the left end of Fig; 3 the tubular member 72,

Y which corresponds to the member 13 of the construction shown in Fig. l, is formed with airaoe 73 for the balls 7l on which is'mount ed a. ring 75, the latter being screwed into the end of the hab barrel 25. The axle member 10 isscrewed into the member 72 as in. dicated at 76., and has arranged thereona nut or collar 7'? which lits on the interiorof the member '72 and thus supporte-the latter. T he axle member l0 is secured t0 a frame member 78 in any preferred mann-arg. as for example, by means of the nut 79,1 between which and the collar 77, the flattened portion 80 of the raniemember is clamped. At its outer end the member 72' is preferably is mounted an arm .82, this arm being secured to the trame member 78 as shown at Y formed with an angular portion 8l on which' 83, and thus holding the member against' i rotation.

, alli shown at 92, bear against the plate 91 and abutments 93 carried by screws or pins 94; which are secured inthe plate 90, these springs, as will be'readily understood, normally tending to.move theplates 90 and 91 together' to compress the friction disks.

In order to effect an ungripping of the friction disks the plate 91 is moved toward the right by means'of a plate 95 which is connected with the plate 91 by pins 96 which vpass through suitable openings in the plate 90. The member 7 2 has arranged on the exterior thereof the screw threads 97 which are engaged by the internally threaded sleeve or nut 98. Balls 99 are arranged between the plate 95 and a'radially extending flange 100 on the sleeve 99 and thus provide a thrust bearing between these parts. An actuating 'arm 101 is secured to the flange 100 and arranged to be actuated by a member 102 which is connected with a pivot 103 carried by the arm. l

As thus constructed the springs 92 normally hold the friction disks in gripping engagement so that the wheel 87 is locked to the hub member 25. lVhen it is desired to ungrip the clutch members the sleeve. 98 is turned on the member 72 and thus caused to move axially thereon and car-ry with it the plates 91. and 95, whereby the springs 92 are compressed and the friction disks permitted to become disengaged. By turning the sleeve 98 in the opposite direct-ion the springs 92 will again move the friction disks into gripping engagement and lock the wheel 87 to the hub member. V

It will be understood by those skilled in the art that various changes may be made in the details of construction within the scope of the appended claims and since the construction shown and described is merely illustrative of one form in which the invention maybe embodied, do not wish to be limited to these precise details.

Having thus described the invention,

'what is claimed is:

1. ln a motor cycle, the combination of a stationary axle member, a hub barrel, friction members carried by said barrel on the opposite ends thereof. friction members cooperating with said first mentioned friction members and relative to Which the first .mentioned friction members are adapted to rotate, means extending through said barroland secured at one end of said axle membei* andhaving connection with the second mentioned friction members and adapted to hold the same against rotation, and means atthe ends of said axle member for independently effecting the gripping and ungripping of the said cooperating friction members.

2. In a motor cycle', the combination ofa stationary axle member, a hub'barrel rotatably mounted on opposed bearings at the ends thereof, friction members carried by -said barrel on the ends thereofexteriorly of said hub bearings, friction members cooperating with .said first mentioned friction members and relative to which the rst mentioned friction members are adapted to rotate, means extending through said barrel and secured at one endof said axle member and having connection with the said second mentioned friction members 'and adapted to hold the same against rotation, means adapted, when actuated one vway to effect a gripping of the one non-rotatable friction member with its cooperating friction member to retard said hub barrel, and when actuated in the opposite wayto be locked to the hub barrel to drive the'latter, and means for effecting a gripping and ungripping of the other cooperating frictidr members.

3. ln a motor cycle, the combination of a. stationary axle member, bearings arranged thereon, a hub barrel rotatably mounted on said bearings, friction disks carried by said barrel on the opposite ends thereof exteriorlyr of said bearing 1 friction disks carried by said stationary member and coperating with said first mentioned friction disks, and

means for independently effecting the gripping and ungripping of the coperating friction disks. i

4. In a motor cycle, the combination of a stationary axle member, a pair of connected members arranged on said axle member, means at one end of said axle member for holding both of said connected members against rotation, a hub barrel rotatably mounted on said connected. members, friction members carried by said barrel on the opposite ends thereof, friction members carried by said (connected members and coperating with said first' mentioned friction members, and means for independently effecting the gripping and ungripping of the cooperating friction members to retard or release said barrel.

ln a motor cycle, the combination of a. stationary axle membena pair of interlockingvtubular members arranged on said axle member, means at one end of said axle member for holding both of said tubular members'against rotation, a hub barrel,` rotatably mounted on said tubular members, 4friction disks carried by said barrel on the opposite ends thereof, friction disksca'rried by said tubular members and cooperating with said rst mentioned disks, a driving member for I said barrel arranged at the opposite "end of said axle member from said means, means actuated by said driving member for-eEect-f ing the gripping and ungripping of theffricaf tion disks at one end of saidbarljebed means for eiiecting the grippiggflandfungripping of the friction disks iaftjgthesopposite end of said barrel. Q

6. In a motor cycle, the ,combination of a stationary axle member, .a pair of connected tubular members arranged on saidy axle member, means at one end of said axle member for holding both'of lsaid tubular members, 'a driving member arranged at thev opposite end of said axle member, friction members carried by said barrel at the oppo site ends thereof, friction disks carried byl for effecting the gripping and ungripping i Y of the friction members at the opposite end of said barrel.

7. In a motor cycle, the combination of an axle member, a pair of connected tubular members, a hub barrel rotatably mountedA on said tubular members, a driving member, a

ber and of one of said tubular inembers` adapted to .coperate with the first men-V tioiied member against axial movement.-

bearing to hold the driving thrust bearing for said driving member at one endofsaid axle member, means adapted "to form a driving connection between said driving inejmber and said barrel, and a thrust bearing between said driving inemn 8. In a vmotor cycle, the combination of a hub barrel, a stationary member supporting said barrel, friction members carried b said barrel at the opposite ends thereo friction members carried by said stationary member and adapted to engage said first mentioned friction members, means at one end of said: stationary member adapted to -Y be connected to the frame of the motor cycle to hold said member against rotation, means at'tlie opposite end of said stationary member for driving said-barrel and moving the friction members adjacent thereto into arf gripping engagement,- and revolnble cani means for. moving the other friction :memn bers into gripping engagement.

.In testimony whereof my signaI i l ture in' presence of two Witnesses.

FREDERXCK S. ELLETT. I'

Witnesses: i

A. C. Rice, D. HnLnN CANFIELD. 

